Which number is the best estimate of 866,214,000,000? 9 ×

8 ×

10 ×
× 10

Using rounding and scientific notation, it is found that the best estimate of 866,214,000,000 is:

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Which is the first option.

A similar problem is given at link

9 × 10^11

Step-by-step explanation:

An index number is simply referred to a number that is being raised to a particular power or index which tells us the amount of times the number will be multiplied by itself. An example is 10³ which means we have to multiply 10 thrice and this will be:

= 10 × 10 × 10

= 1000

For 866,214,000,000, this can be expressed as:

= 8.66214 × 10^11

We should note that 8.66214 can be changed to the nearest whole number which will be approximated to 9.

Therefore, the answer will be:

= 9 × 10^11

step-by-step explanation: yes

answer: give more info

step-by-step explanation: